User's Guide Power Amplifier TAS5508-5121K8EVM

Control Interface (J30)
2-6
2.7 Control Interface (J30)
This interface connects the TAS5508−5121K8EVM board to a TI input board.
Table 2−11. J30 Pin Description
Pin
No.
Net-Name at
Schematics
Description
1 GND Ground
2 PSVC−MCPU Power supply volume control from (mC) input board
3 GND Ground
4 RESET System reset (bidirectional). Activate MUTE before RESET for quiet reset.
5 BKND−ERR Backend error (or soft reset) provides reduced click and pop reset, without resetting I
2
C
volume register settings.
6 MUTE Ramp volume from any setting to noiseless soft mute. Mute can also be activated by I
2
C.
7 PDN Power down. The TAS5508B goes to a power-down state when activated.
8
9
RESERVED
10 SDA I
2
C data clock
11 GND Ground
12 SCL I
2
C bit clock
13
14
RESERVED
15 CONF−SEL Configuration select. Channel 5 and 6 speaker outputs active and line outputs inactive
when high. Line outputs active and channel 5 and 6 speaker outputs inactive when low.
16 RESERVED
17 GND Ground
18
19
RESERVED
20 SD1 Shutdown error reporting for front left, front right, and center channels. Activated if the
TAS5121 has high current or high temperature. See Chapter 3.
21 SD2 Shutdown error reporting for rear left, rear right, surround left, surround right, and
subwoofer channels. Activated if TAS5121 has high current or high temperature. See
Chapter 3.
22 OTW Temperature warning. Activated if one or more TAS5121 has reached the temperature
warning level.
23 RESERVED
24 HP−SEL Headphone select. Headphone is active when low and inactive when high.
25
26
GND Ground
27
28
29
30
RESERVED
31
32
GND Ground
33
34
+5V 5-V dc power supply (output)